<template>
  <t-space direction="vertical">
    <!-- 自定义选中项内容，valueDisplay 为渲染函数（function） -->
    <t-select
      v-model="value1"
      :options="options"
      :valueDisplay="valueDisplay"
      placeholder="请选择"
      multiple
      clearable
    />

    <!-- 自定义选中项内容，valueDisplay 为 插槽(slot) -->
    <t-select v-model="value2" :options="options" placeholder="请选择" multiple clearable>
      <template #valueDisplay="{ value, onClose }">
        <t-tag
          v-for="(item, index) in value"
          :key="index"
          :closable="true"
          :onClose="
            (context) => {
              context.e && context.e.stopPropagation();
              onClose(index);
            }
          "
        >
          {{ item.label }}({{ item.value[0].toUpperCase() }})
        </t-tag>
      </template>
    </t-select>
  </t-space>
</template>

<script lang="jsx">
export default {
  data() {
    return {
      value1: ['1', '2', '3'],
      value2: ['4', '5', '6', '7'],
      options: [
        { label: '选项一', value: '1' },
        { label: '选项二', value: '2' },
        { label: '选项三', value: '3' },
        { label: '选项四', value: '4' },
        { label: '选项五', value: '5' },
        { label: '选项六', value: '6' },
        { label: '选项七', value: '7' },
        { label: '选项八', value: '8' },
        { label: '选项九', value: '9' },
      ],
    };
  },
  methods: {
    valueDisplay(h, { value, onClose }) {
      if (!(value instanceof Array)) return;
      return value.map((item, index) => (
        <t-tag
          key={index}
          closable={true}
          onClose={(context) => {
            context.e && context.e.stopPropagation();
            onClose(index);
          }}
        >
          {item.label}({item.value[0].toUpperCase()})
        </t-tag>
      ));
    },
  },
};
</script>
